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| 1 | Magnetic anchor guidance for endoscopic submucosal dissection and other endoscopic procedures显示文摘Endoscopic submucosal dissection(ESD) is a wellestablished, minimally invasive treatment for superficial neoplasms of the gastrointestinal tract. The universal adoption of ESD has been limited by its slow learning curve, long procedure times, and high risk of complications. One technical challenge is the lack of a second hand that can provide traction, as in conventional surgery. Reliable tissue retraction that exposes the submucosal plane of dissection would allow for safer and more efficient dissection. Magnetic anchor guided endoscopic submucosal dissection(MAGESD) has potential benefits compared to other current traction methods. MAG-ESD offers dynamic tissue retraction independent of the endoscope mimicking a surgeon's 'second hand'. Two types of magnets can be used: electromagnets and permanent magnets. In this article we review the MAG-ESD technology, published work and studies of magnets in ESD. We also review the use of magnetic anchor guidance systems in natural orifice transluminal endoscopic surgery and the idea of magnetic non-contact retraction using surface ferromagentization. We discuss the current limitations, the future potential of MAG-ESD and the developments needed for adoption of this technology. | Mohamed Mortagy Neal Mehta Mansour A Parsi Seiichiro Abe Tyler Stevens John J Vargo Yutaka Saito Amit Bhatt | 2017 | World Journal of Gastroenterology2017，23，16： | 12 |
| 2 | Diagnostic and therapeutic direct peroral cholangioscopy using an intraductal anchoring balloon显示文摘AIM:To report our experience using a recently introduced anchoring balloon for diagnostic and therapeutic direct peroral cholangioscopy(DPOC).METHODS:Consecutive patients referred for diagnostic or therapeutic peroral cholangioscopy were evaluated in a prospective cohort study.The patients underwent DPOC using an intraductal anchoring balloon,which was recently introduced to allow consistent access to the biliary tree with an ultraslim upper endoscope.The device was later voluntarily withdrawn from the market by the manufacturer.RESULTS:Fourteen patients underwent DPOC using the anchoring balloon.Biliary access with an ultraslim upper endoscope was accomplished in all 14 patients.In 12(86%) patients,ductal access required sphincteroplasty with a 10-mm dilating balloon.Intraductal placement of the ultraslim upper endoscope allowed satisfactory visualization of the biliary mucosa to the level of the confluence of the right and left hepatic ducts in 13 of 14 patients(93%).Therapeutic interventions by DPOC were successfully completed in all five attempted cases(intraductal biopsy in one and DPOC guided laser lithotripsy in four).Adverse events occurred in a patient on immunosuppressive therapy who developed an intrahepatic biloma at the site of the anchoring balloon.This required hospitalization and antibiotics.Repeat endoscopic retrograde cholangiopancreatography 8 wk after the index procedure showed resolution of the biloma.CONCLUSION:Use of this anchoring balloon allowed consistent access to the biliary tree for performance of diagnostic and therapeutic DPOC distal to the biliary bifurcation. | Mansour A Parsi Tyler Stevens John J Vargo | 2012 | World Journal of Gastroenterology2012，18，30： | 8 |
| 3 | Factors predicting adverse short-term outcomes in patients with acute cholangitis undergoing ERCP: A single center experience显示文摘AIM: To identify potential factors that can predict adverse short-term outcomes in patients with acute cholangitis undergoing endoscopic retrograde cholangiopancreatography(ERCP). METHODS: Retrospective analysis of consecutive patients admitted to our center for acute cholangitis and underwent ERCP from 2001 to 2012. Involvement of two or more organ systems was termed as organ failure(OF). Cardiovascular failure was defined based on a systolic blood pressure of < 90 mmHg despite fluid replacement and/or requiring vasopressor treatment; respiratory failure if the Pa02 /Fi02 ratio was < 300 mmHg and/or required mechanical ventilation; coagulopathy if the platelet count was < 80; and renal insufficiency if serum creatinine was > 1.9 mg/dL. Variables associated with short term adverse clinical outcomes defined as persistent OF and/or 30-d mortality was determined. RESULTS: A total of 172 patients(median age 62 years, 56.4% female) were included. The median door to ERCP time was 17 h. Bile duct stones were the most common etiology(n = 67, 39.2%). In multivariate analysis, factors that were independently associated with persistent OF and/or 30-d mortality included American Society of Anesthesiology(ASA) physical classification score > 3(OR = 7.70; 95%CI: 2.73-24.40), presence of systemic inflammatory response syndrome(OR = 3.67; 95%CI: 1.34-10.3) and door to ERCP time greater than 72 h(OR = 3.36; 95%CI: 1.12-10.20). Door to ERCP time greater than 72 h was also associated with 70% increase in the mean length of stay(P < 0.001). Every one point increase in the ASA physical classification and every 1 mg/dL increase in the preERCP bilirubin level was associated with a 34% and 2% increase in the mean length of hospital stay, respectively. Transfer status did not impact clinical outcomes. CONCLUSION: Higher ASA physical classification and delays in ERCP are associated with adverse clinical outcomes and prolonged length of hospital stay in patients with acute cholangitis undergoing ERCP. | Udayakumar Navaneethan Norma G Gutierrez Ramprasad Jegadeesan Preethi GK Venkatesh Madhusudhan R Sanaka John J Vargo Mansour A Parsi | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，3： | 7 |
| 4 | Image-based brachytherapy for cervical cancer显示文摘Cervical cancer is the third most common cancer in women worldwide; definitive radiation therapy and concurrent chemotherapy is the accepted standard of care for patients with node positive or locally advanced tumors > 4 cm. Brachytherapy is an important part of definitive radiotherapy shown to improve overall survival. While results for two-dimensional X-ray based brachytherapy have been good in terms of local control especially for early stage disease, unexplained toxicities and treatment failures remain. Improvements in brachytherapy planning have more recently paved the way for three-dimensional image-based brachytherapy with volumetric optimization which increases tumor control, reduces toxicity, and helps predict outcomes.Advantages of image-based brachytherapy include:improved tumor coverage(especially for large volume disease), decreased dose to critical organs(especially for small cervix), confirmation of applicator placement, and accounting for sigmoid colon dose. A number of modalities for image-based brachytherapy have emerged including: magnetic resonance imaging(MRI),computed tomography(CT), CT-MRI hybrid, and ultrasound with respective benefits and outcomes data. Forpractical application of image-based brachytherapy the Groupe Europeen de Curietherapie-European Society for Therapeutic Radiology and Oncology Working Group and American Brachytherapy Society working group guideline serve as invaluable tools, additionally here-in we outline our institutional clinical integration of these guidelines. While the body of literature supporting image-based brachytherapy continues to evolve a number of uncertainties and challenges remain including: applicator reconstruction, increasing resource/cost demands, mobile four-dimensional targets and organs-at-risk, and accurate contouring of 'grey zones' to avoid marginal miss. Ongoing studies, including the prospective EMBRACE(an international study of MRI-guided brachytherapy in locally advanced cervical cancer) trial, along with continued improvements in imaging, contouring, quality assurance, physics, and brachytherapy delivery promise to perpetuate the advancement of image-based brachytherapy to optimize outcomes for cervical cancer patients. | John A Vargo Sushil Beriwal | 2014 | World Journal of Clinical Oncology2014，5，5： | 7 |
| 5 | Service-dominant logic: continuing the evolution显示文摘 | Stephen L. Vargo Robert F. Lusch | 2008 | Journal of the Academy of Marketing Science2008，，1： | 6 |
| 6 | On value and value co-creation: A service systems and service logic perspective显示文摘 | Stephen L. Vargo Paul P. Maglio Melissa Archpru Akaka | 2008 | European Management Journal2008，，3： | 4 |
| 7 | A lexicon for endoscopic adverse events: report of an ASGE workshop显示文摘 | Peter B. Cotton Glenn M. Eisen Lars Aabakken Todd H. Baron Matt M. Hutter Brian C. Jacobson Klaus Mergener Albert Nemcek Bret T. Petersen John L. Petrini Irving M. Pike Linda Rabeneck Joseph Romagnuolo John J. Vargo | 2010 | Gastrointestinal Endoscopy2010，，3： | 3 |
| 8 | Competing through service: Insights from service-dominant logic显示文摘 | Robert F. Lusch Stephen L. Vargo Matthew O’Brien | 2006 | Journal of Retailing2006，，1： | 2 |
| 9 | A randomized, double blind study of interleukin 10 for the prevention of ERCP-induced pancreatitis显示文摘 | John A Dumot Darwin L Conwell Gregory Zuccaro John J Vargo Steven S Shay Kirk A Easley Jeffrey L Ponsky | 2001 | The American Journal of Gastroenterology2001，，7： | 2 |
| 10 | A multicenter, prospective, randomized comparison of a novel signal transmission capsule endoscope to an existing capsule endoscope显示文摘 | Eric H. Choi Klaus Mergener Carol Semrad Laurel Fisher David R. Cave Milan Dodig Carol Burke Jonathan A. Leighton David Kastenberg Peter Simpson James Sul Kanishka Bhattacharya Roger Charles Lauren Gerson Luke Weber Glenn Eisen Warren Reidel John J. Vargo | 2013 | Gastrointestinal Endoscopy2013，，2： | 2 |
| 11 | Management of the Open Abdomen: From Initial Operation to Definitive Closure显示文摘 | Vargo Daniel Richardson J David Campbell Andre Chang Michael Fabian Timothy Franz Michael Kaplan Mark Moore Frederick Reed R Lawrence Scott Bradford Silverman Ronald | 2009 | The American Surgeon2009，，11： | 2 |
| 12 | Service-dominant logic: continuing the evolution显示文摘 | Stephen L. Vargo Robert F. Lusch | 2008 | Journal of the Academy of Marketing Science2008，，1： | 2 |
| 13 | A Randomized Prospective Trial Comparing Unsedated Esophagoscopy via Transnasal and Transoral Routes Using a 4-mm Video Endoscope with Conventional Endoscopy with Sedation显示文摘 | P. Thota G. Zuccaro Jr. J. Vargo II D. Conwell J. Dumot M. Xu | 2005 | Endoscopy2005，，06： | 2 |
| 14 | Suppressing tawny crazy ant (Nylanderia fulva) by RNAi technology显示文摘A bstract The tawny crazy ant(Nylanderia fulva)is a new invasive pest in the United States.At present,its management mainly relies on the use of synthetic insecticides,which are generally ineffective at producing lasting control of the pest,necessitating alternative environmentally friendly measures.In this study,we evaluated the feasibility of gene silencing to control this ant species.Six housekeeping genes encoding actin(NfActin),coatomer subunit β (NfCOPP),arginine kinase(NfArgK),and V-type proton ATPase subunits A(NfvATPaseA),B(NfvATPaseB)and E(NfvATPaseE)were cloned.Phylogenetic analysis revealed high sequence similarity to homologs from other ant species,particularly the Florida carpenter ant(Camponotus floridanus).To silence these genes,vector L4440 was used to generate six specific RNAi constructs for bacterial expression.Heat-inactivated,dsRNA-expressing Escherichia coli were incorporated into artificial diet.Worker ants exhibited reduced endogenous gene expression after feeding on such diet for 9 d.However,only ingestion of dsRNAs of NfCOPfi(a gene involved in protein trafficking)and NfArgK(a cellular energy reserve regulatory gene in invertebrates)caused modest but significantly higher ant mortality than the control.These results suggest that bacterially expressed dsRNA can be orally delivered to ant cells as a mean to target its vulnerabilities.Improved efficacy is necessary for the RNAi-based approach to be useful in tawny crazy ant management. | Jia Meng Jiaxin Lei Andrew Davitt Jocelyn RHolt Jian Huang Roger Gold Edward L Vargo Aaron MTarone Keyan Zhu-Salzman | 2020 | Insect Science2020，27，1： | 2 |
| 15 | Coastal eutrophication, land use changes and Ceratium furca (Dinophyceae) blooms in Pago Pago Harbor, American Samoa 2007-2009显示文摘The bloom forming dinoflagellate, Ceratium furca, has been linked with coastal eutrophication worldwide in tropical and subtropical locations. During the summer of 2007, an unusual 6-month long bloom of C. furca was observed in Pago Pago Harbor, Tutuila Island, American Samoa. Incidents of dinoflagellate blooms in this area have not been previously reported. The bloom was first reported in May and dissipated in November 2007. In February-March 2009, a similar C. furca bloom was observed. During both blooms, no fish mortality events were reported. Maximum cell counts were observed on September 20, 2007 at 9 200 cell/mL. At this time, total nitrogen was measured at 1.2 mg/L while total phosphate was below detection limits. Changes in land use practices may have been the primary driver of these blooms. Intense fertilization of athletic fields coupled with ineffective management strategies is hypothesized to have a direct link to the increase in nutrients found in the Pago Pago Harbor and may have been the trigger for the initialization of these blooms. During 2008, the fields were not used due to an infestation of the fire ant, Solenopsis geminata. Once controlled, the fields were opened again in 2009 and fertilizers were applied in January, a month before the bloom was observed. | Steve L. MORTON Andrew SHULER Jeff PATERNOSTER Sharon FANOLUA Don VARGO | 2011 | Chinese Journal of Oceanology and Limnology2011，29，4： | 2 |
| 16 | A lexicon for endoscopic adverse events: report of an ASGE workshop显示文摘 | Peter B. Cotton Glenn M. Eisen Lars Aabakken Todd H. Baron Matt M. Hutter Brian C. Jacobson Klaus Mergener Albert Nemcek Bret T. Petersen John L. Petrini Irving M. Pike Linda Rabeneck Joseph Romagnuolo John J. Vargo | 2010 | Gastrointestinal Endoscopy2010，，3： | 2 |
| 17 | Clinical outcomes of endoscopic management of pancreatic fluid collections in cirrhotics vs non-cirrhotics: A comparative study显示文摘BACKGROUND Endoscopic management of symptomatic pancreatic fluid collections (PFCs) using self-expandable metal stents (SEMS) placement has emerged as an innovative therapeutic approach with excellent efficacy, safety, and relatively few adverse outcomes. However, their use has not been studied in patients with cirrhosis. Cirrhotics tend to be considered less than optimal candidates due to concern for portal hypertension and coagulopathy related complications. AIM To compare the efficacy and safety of using SEMS for drainage of symptomatic PFCs in cirrhotic vs non-cirrhotic patients. METHODS We conducted a retrospective comparative analysis of patients with symptomatic PFCs [pancreatic pseudocyst (PP) or walled-off necrosis (WON)] who underwent endoscopic ultrasound (EUS)-guided placement of fully covered self-expandable metals stents or lumen-apposing self-expandable metal stents. All patients were followed clinically until resolution of PFCs or death. Definition:(1) Technical success was defined as successful placement of SEMS;and (2) Clinical success was defined as complete resolution of the PFCs without additional interventions including interventional radiology or surgery. Number of procedures performed per patient, number of patients who achieved complete resolution of the PFCs without additional interventions and procedure related adverse events were recorded.RESULTS From January 2012 to December 2017, a total of 88 patients underwent EUSguided drainage of symptomatic PFCs. Of these, 58 non cirrhotic patients underwent plastic stent insertion for management of PFC and 30 patients, 5 with cirrhosis and 25 without cirrhosis, underwent EUS-guided transmural drainage with SEMS, including 18 (60%) PP and 12 (40%) WON. Technical success was achieved in all 30 patients. Clinical success was achieved in 60% cirrhotic patients and 92% non-cirrhotics (P = 0.12). Procedure-related adverse events were 60% in cirrhotic and 28% non-cirrhotic (P = 0.62). Moreover, fatal adverse events were statistically more common in cirrhotics compared with non-cirrhotics (0 vs 40%;P = 0.023). Successful stent removal following resolution of the PFC, was 60% in cirrhotics and 80% in non-cirrhotics (P = 0.57). Post-procedure length of hospitalization was 18.6 ± 20.3 d in cirrhotics and 5.6 ± 13.7 d in non-cirrhotics (P = 0.084). CONCLUSION EUS-guided management of PFC using SEMS placement has a high technical and clinical success rate in non-cirrhotics. However, in cirrhotics caution must be exercised given the high morbidity and mortality as evidenced by our cohort, particularly for the endoscopic debridement of WONs. Larger, multicenter studies are warranted to further characterize the risk profile and outcomes in these patients. | Sobia Laique Matheus C Franco Tyler Stevens Amit Bhatt John J Vargo Prabhleen Chahal | 2019 | World Journal of Gastrointestinal Endoscopy2019，11，6： | 2 |
| 18 | From Repeat Patronage to Value Co-creation in Service Ecosystems: A Transcending Conceptualization of Relationship显示文摘 | Stephen L. Vargo Robert F. Lusch | 2010 | Journal of Business Market Management2010，，4： | 2 |
| 19 | Effects of hyperbaric oxygenation therapy on cerebral metabolism and intracranial pressure in severely brain injured patients显示文摘 | Rockswold SB Rockswold GL Vargo JM | 2001 | J Neurosurg2001，94，3： | 1 |
| 20 | Clinical specificity and sensitivity of a blood screening assay for detection of HIV1 and HCV RNA显示文摘 | VARGO J SMITH K KNOTT C | 2002 | Transfusion2002，42，6： | 1 |
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